Swaging apparatus for cores and spools



July 22, 1941. J. B. SEEVER 4 ,2 ,9

SWAGING APPARATUS FOR CORES ,AND SPQOLS Filed Oct. 4, 1940 2Sheets-Sheet l 464/- aia! a x 46 July 22, 1941. J. B. SEEVER 2,249,984

SWAGING APPARATUS FOR CORES AND SPOOLS Filed Oct. 4; 1940 2 Sheets-Sheet2 jfyzvewr" zfokn (.6 See yer.

Patented July 22, 1941 John B. Scever, Oak Pa rk, 111., assignor toWilliam sum Application October 4, 1940, Serial No. 359,807

9 Claims. (Cl- 931) This invention relates to swaging apparatus forcores, spools, bobbins and the like, and more particularly to cores,spools or bobbins adapted to receive coil windings, 'etc.

An object of the invention is to provide simple and effective apparatusfor swaging the ends of cores so as to permanently lock flanges upon thecores. A further object is to provide means for swaging the ends ofpaper cores to provide looking means for shoulders or sides which arepermanently held upon the cores to retain windings thereon. Otherspecific objects and advantages will appear as the specificationproceeds.

The invention is illustrated, in a preferred embodiment, by theaccompanying drawings, in which- Flgure 1 is a top plan view ofapparatus embodying my invention; Fig. 2, a front view in elevation;Fig. 3, a sectional detail view, the section being taken as indicated atline 8 of Fig. 2; Fig. 4, an enlarged detail sectional view showing themanner of supporting the core; and Fig. 5, a perspective view of thefinished core, spool, or bobbin.

In the apparatus illustrated, A designates a frame equipped with a frontshelfA'; B, core-' supporting apparatus; C, swaging apparatus; and D,powermechanism. Y I

The frame A may be of any suitable type or construction. In theillustration given, a machine bed or frame I is shown, to which issecured a shelf A by means of metal straps ll. Upon the shelf A ismounted a pair of end standards l2 perforated to receive the operatingplungers or bars hereafter described. Inner standards l3 are alsoprovided, each being perforated for supporting the plunger or shaftsmentioned. g

The core-supporting apparatus, in the illustration given, comprises afoundation block I4 having a recess i5 adapted to receive the lowerportion of the core indicated by the numeral I6. In the illustrationgiven, the core is square in shape and the notch in the block I4 isV-shaped to receive the lower half portion of the core. A

to receive cores of different shapes. It will be noted that blocks I4and l! are narrow so asto leave the end portions of the core upon whichthe end flanges are placed unconfined.

The movable support I9 is provided with a lower bracket member 2| havingan ear portion 22 extending beyond the pivot 20 and to which is fixed adownwardly extending post or finger 23. The member 23 extends through anenlarged opening 24 in the shelf A. Secured to the supporting member i8is a laterally extending bar 25 to the ends of which are-secured springs26, the lower ends of the springs being secured to the shelf A andnormally urging the bar 25 and the support l9 downwardly to bring theblock I! into confining engagement with the core. The movable support l8extends between a pair of standards 21 carried by the shelf A, and thepivot 20 extends through the standards21 and the member l9 therebetween.

The swaging mechanism C may be of any suitable construction. In theillustration given, a plunger or bar 28 is mounted in each pair ofstandards l2 and I3 on opposite sides of the support l4. Each of thebars 28 at its rear end portion is provided with a square end 29 adaptedto receive a wrench for adjusting the bars, as will be later described.Each of the shafts 28 is provided at its forward end with a disk 88 anda flared end portion 3| just ahead of the disk 38. As shown more clearlyin Fig. 4, the flared head portion-3| is adapted to be received withinthe core l6 and to turn the end portion outmovable upper block I! isprovided with a recess 7 l8 corresponding to recess ii of block H, thetwo recesses being complementary for receiving the core IS. The upperblock i1 is carried by a rectangular support 19 pivotally mounted uponshaft 28. Both of the blocks II and [1 are secured to their respectivesupports by means of bolts (not shown) so as to permit removal thereofand the substitution of other support members with recesses of differentshapes. adapted carried by shelf A.

wardly, just prior to its engagement by the circular fiange head 38.

Each shaft or plunger 28 is provided centrally -with a threaded portion32, and a circular nut 331s mounted on each threaded portion. A linkmember 34 is provided at its upper end with a yok having its arms pinnedto opposite sides of the member 3. The lower end of the link 84 isconnected pivotally by link 36 to a stud 31 An operatinglink 38 has oneend pivotally connected to the link 43 at a central point; e

The power means D may be of any suitable type or construction. Treadleor other manually operated means may be employed, An electric motor orother suitable power means may be used. In the illustration given, acompressed air cylinder 39 is suspended by supports 40 from the shelf A.While any suitable form of power means may be employed, the cylinderillustrated consists of a piston (not shown) which is pro- Vlded at itsupper end with a plunger 4| and which is exposed to the atmosphere onits lower side. A spring (not shown) normally urges the piston toitsupper position. Compressed air is admitted through the valve-controlledpipe 42 to the upper end of the cylinder so as to depress the pistonagainst the force of the spring.

Theplunger 4lengages an upper operating bar or block 43, to the rearportion of which is pivotally connected at each end one of the operatinglinks 38. Extending rearwardly from the block 43 is a support 44 adaptedto maintain the finger or post 23 in the upper position illustrated inFig. 3 except when the plunger 4! is depressed.

Each of the swaging plungers or bars 28 is locked in the retractedposition shown in Figures 1 and 2 by a slide bar 45. Each slide bar isprovided with a pair of elongated slots 46 through which a bolt 41extends. The slide bar is provided with a cut-out portion 48 which, whenaligned with the link 34, permits the plunger 28 to be forced inwardlyor outwardly. A spring 48 is attached to each of the metal straps 45 andto a post carried by the bed A, thus normally moving the matching strapsor bars 45 to locking position.

Operation In the operation of the machine, the valve controllingthe'compressed air pipe 42 is closed and a spring within the powercylinder normally urges the plunger 4! to its upper position,illustrated in Fig. 3. In this position, the support member 44 maintainsthe post 23 in the position illustrated in Fig. 3 and thus causes theupper block II to be tilted to the open position shown. The operator isthus free to insert a core l8 within the V-recess I5, with the sideflanges iii of the core resting on the free ends of the core. Theoperator then, by means of a foot treadle or any other valve-operatingmeans, admits compressed air to the top of the power cylinder 39 and thepiston is depressed, carrying the plunger 4| downwardly and the support44 likewise downwardly. As the support 44 recedes, the finger 23 passesdownwardly through the opening 24 and allows the block I! to swing toclosed position, thus confining the core I in the position shown moreclearly in Fig, 4. At the same time, the downward movement of the member43 pulls inwardly upon the link 34 by means of connecting link 38 andthus swings the yoke 35, the nut 33,.and plunger 28 secured theretoinwardly. As each plunger 28 moves inwardly, the flared head portion 3|engages the inner portion of the core, as shown in Fig. 4, and thecircular flange heads 38 press the now outwardly curved end portions ofthe core outwardly into engagement with the flanges l5 of the core, thusanchoring the flanges thereon and against removal. When the operatorreleases the power, after the swaging operation, the spring within thecylinder again presses plunger 4| upwardly and the support 44 pressesfinger 23 upwardly to tilt the block I! out of engagement with the lowerblock l4. The operator is now free to remove the finished core and placea new core assembly thereon,

The apparatus is extremely simple, sure, and accurate in operation.

While in the foregoing description, I have set forth certain details ofconstruction, as illustrative of the apparatus, it will beunderstood'that such details may be varied widely without departing fromthe spirit of my invention.

Iclaim:

1. In apparatus for swaging the ends of cores to lock flangespermanently thereon, a frame, a core support receiving the body portionof the core but leaving free the flange-carrying end portions, apivotally mounted clamp above said support and adapted to confine thecore thereon, slidably mounted plungers aligned with said core onopposite sides of said support, swage heads having enlarged rearportions carried by said plungers and adapted to enter said cores andpress outwardly the end edge portions thereof,- and means for bringingsaid heads into engagement with said cores and simultaneously movingsaid clamp to confining position and for simultaneously retracting saidplungers and moving said clamp to non-confining position.

2. In apparatus for swaging the ends of cores to lock flangespermanently thereon, a frame, a core support receiving the body of thecore but leaving free the flange-carrying end portions, means forreleasably confining the core upon said support, spring means urgingsaid last-mentioned means toward confining position, slidably mountedplungers carried by said frame for longitudinal movement and supportedon opposite sides of said support in alignment with said core,

, cated toward said core.

3. In apparatus for swaging the ends of coresto lock flanges permanentlythereon, a frame, a core support receiving the central portion of thecore but leaving free the flange-carrying end portions, means forconfining the core upon said support, plungers mounted in said frame forslidable movement toward and away from said core, said plungers beingprovided with threaded portions, a nut engaging the threaded portion ofeach plunger, means for rotating the plunger to adjust the nut thereon,link members engaging said nuts, and means for operating said linkmembers to reciprocate said nuts and the plungers carried thereby.

4. In apparatus for swaging the ends of cores to lock flangespermanently thereon, a frame, a core support consisting of at least twoparts, one which is movable and adapted to receive the body portion ofthe core, leaving free the flange carrying end portions, means foroperating the movable portion of said support after a core has ing freethe flange-carrying end portions, clamping means for confining said coreupon said sup port, spring means normally urging said clamp toward saidcore support, releasable locking means maintaining said clamp away fromsaid core support to permit a core to be inserted thereon, slidablymounted plungers carried by said frame in alignment with the channel ofsaid core and adapted to engage opposite sides of said core, swage headscarried by said plungers. means for operating said plungers toward andaway from said core, and means for releasing said clamp to permit thesame to engage said core when said plungers are operated and beforetheyengage the ends of said core.

6. In apparatus for swaging the ends of cores to lock flanges thereon, aframe, a core support receiving the body portion of the core but leavingfree the flange-carrying end portions, means for confining the core uponsaid support, slidably mounted plungers on opposite sides of saidsupport and carried by said frame in alignment with the channel of saidcore, swage heads carried by said plungers for engagement with saidcore, latch means preventing inward'movement of said plungers forengagement with said core, and means for moving said plungers intocore-engaging position when said latch means is released.

7. In apparatus for swaging the ends of cores to lock flanges thereon, aframe, a core support upon said frame and provided with a notch adaptedto receive the central portion of the core leaving free the'flange-carrying'end portions, 9.

,pivotally mounted clamp member provided with a notch complementary tothe notch of said support for engaging the upper portion of the core,means urging said clamp toward said support, slidably mounted plungerscarried by said frame on opposite sides of said core and in alignmentwith the channel thereof, swageheads carried by the inner ends of saidplungers, link mechanism for providing said plungers inwardlysimultaneously, said link means being connected to a common actuatingbar, a power cylinder provided with a piston and a stem, the outer endof said stem being-engaged to said common actuating bar, and means foroperating said piston by a differential in pressure fluids.

8. In apparatus of the character set forth for swaging the ends of papercores to lock flanges permanently thereon, a frame, a core supportthereon adapted to receive the central portion of a core, leaving freethe flange-carrying end portions, said flanges upon the ends of the corebeing brought into abutting relation with the sides of the support, apivotally mounted member above said support and adapted to confine saidcore upon said support, means normally urging said *pivotally mountedmember toward said support, plungers slidably mounted in said frame formovement toward and away fromsaid core and being provided with headsadapted to engage the ends of said core to swage the same against theflanges thereof, means for moving said plungers toward and away fromsaid core simultaneously, and automatic means for opening and closingsaid .pivotally mounted member above said support.

9. In apparatus for swaging the ends of cores to lock flangespermanently thereon, a frame,-a

'core support receiving the body portion of the core but leaving freethe flange-carrying end portions, a movably mounted clamp above saidsupport and adapted to be brought into confining relation about thecore, slidably mounted plungers aligned with said core on opposite sidesof said support, swage heads carried by said plungers and adapted toenter said cores and press outwardly the end edge portions thereof,means for bringing said heads intov engagement with said cores andsimultaneously moving said clamp to confining position, and means forretracting said plungers and moving said clamp to non-confiningposition.

JOHN B. SEEVER.

